Merge pull request openproject#5 from jinksw/master

避免$.sTag存在时无用的代码

Author: openproject

lesscode-core/src/main/java/com/jayfeng/lesscode/core/LogLess.java

@@ -124,16 +124,16 @@ public static void v(String str, Object... args) {
     }
 
     /**
-     * 自动从StackTrace中取TAG
+     * 如果$.sTAG是空则自动从StackTrace中取TAG
      *
      * @return
      */
     private static String getTag() {
-        StackTraceElement caller = new Throwable().fillInStackTrace().getStackTrace()[2];
-        if (TextUtils.isEmpty($.sTAG)) {
-            return caller.getFileName();
+        if (!TextUtils.isEmpty($.sTAG)) {
+            return $.sTAG;
         }
-        return $.sTAG;
+        StackTraceElement caller = new Throwable().fillInStackTrace().getStackTrace()[2];
+        return caller.getFileName();
     }
 
     /**